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Finding the Fourth Proportional to 733.32, 1,011.22 and 628.76

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Solution

The fourth proportional to 733.32, 1,011.22 and 628.76 is: 867.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    733.32 : 1,011.22 = 628.76 : x
  2. Step 2: Convert to fraction form
    733.32/1,011.22 = 628.76/x
  3. Step 3: Cross multiply
    733.32x = 1,011.22 × 628.76
  4. Step 4: Simplify right side
    733.32x = 635,814.69
  5. Step 5: Solve for x
    x = 635,814.69/733.32
  6. Step 6: Final answer
    x = 867.04

Related Problems

Find fourth proportional to 366.66, 505.61 and 314.38
Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.